Ok, without internet I get
12007: The server name could not be resolved.
with internet I get
12029: The attempt to connect to the server failed.

I have also tried to turn off messenger, but it didn't make a difference.
I don't have a firewill installed, but I could install one. Suggestions?
Netstat -ab gives a great deal of information, but I don't quite see how to identify the troublemaker from that.
Isn't there a way to identify the process that the error messege belongs to?